There's a version or modified version of the bio-digester system that I want for myself when I build Lesbian Sleepover Waco someday.
This isn't the article I read on the terlet originally, however there is a village somewhere like a resort or commune that uses methane-gas to power generators. All of the huts had "semi dry plumbing" that went to several of these devices.
The methane is lifted from the wastes , human and otherwise and collected via this system. I'm unsure/cannot quote the loss in fidelity but there's something there, something where you're not wasting the waste. They run methane powered genny's and use the remainder on their gardening needs. Anyone can build one, doesn't need to be fanciful and footloose.
Kiwi Farms should fundraise and buy the adjacent lot to Troontown.
http://theurbanfarmingguys.com/methane-biodigester-how-to